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Finding the Fourth Proportional to 652,134.60, 978,201.90 and 439,558.20

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Solution

The fourth proportional to 652,134.60, 978,201.90 and 439,558.20 is: 659,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,134.60 : 978,201.90 = 439,558.20 : x
  2. Step 2: Convert to fraction form
    652,134.60/978,201.90 = 439,558.20/x
  3. Step 3: Cross multiply
    652,134.60x = 978,201.90 × 439,558.20
  4. Step 4: Simplify right side
    652,134.60x = 429,976,666,400.58
  5. Step 5: Solve for x
    x = 429,976,666,400.58/652,134.60
  6. Step 6: Final answer
    x = 659,337.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.